diff --git a/git-checkout.sh b/git-checkout.sh
index 463ed2eaff..a11c939c30 100755
--- a/git-checkout.sh
+++ b/git-checkout.sh
@@ -144,7 +144,7 @@ else
 	work=`git write-tree` &&
 	git read-tree --reset $new &&
 	git checkout-index -f -u -q -a &&
-	git read-tree -m -u $old $new $work || exit
+	git read-tree -m -u --aggressive $old $new $work || exit
 
 	if result=`git write-tree 2>/dev/null`
 	then
diff --git a/git-revert.sh b/git-revert.sh
index c19d3a6916..de8b5f0f0f 100755
--- a/git-revert.sh
+++ b/git-revert.sh
@@ -137,7 +137,7 @@ esac >.msg
 # $prev and $commit on top of us (when cherry-picking or replaying).
 
 echo >&2 "First trying simple merge strategy to $me."
-git-read-tree -m -u $base $head $next &&
+git-read-tree -m -u --aggressive $base $head $next &&
 result=$(git-write-tree 2>/dev/null) || {
     echo >&2 "Simple $me fails; trying Automatic $me."
     git-merge-index -o git-merge-one-file -a || {